Seat arm



FIG. 1 is a left front perspective view of a seat arm showing my new design;

FIG. 2 is a side elevational view;

FIG. 3 is a rear perspective view thereof;

FIG. 4 is an inside perspective view of the left arm;

FIG. 5 is a front elevational view thereof;

FIG. 6 is a rear elevational view thereof; and,

FIG. 7 is a top view thereof.

The bottom view of the seat arm is not shown and forms no part of the claimed design.

The broken lines shown in the drawings represent a variety of environments, environments of varying lengths, or portions thereof and form no part of the claimed design. 

The ornamental design for a seat arm, as shown and described. 